Kapuskasing THEMIS Ground-based All Sky Imager; Full Resolution Images.

THEMIS Ground All Sky Imager at Kapuskasing (49.39 deg GLat, 277.68 deg GLong): 256 x 256 pixel full resolution images of auroral oval. The ASI stations monitor a 170 degree field of view imaging the auroral oval at kilometer resolution. The ASI is comprised of a fisheye lens and CCD in a stainless steel enclosure topped with a transparent acrylic dome. The CCD has a resolution of 256 x 256 pixels. Exposure control ranges from 5 s to 1 ms although the typical data rate is one image every 3 seconds. Silicone heaters keep the instrument within the nominal temperature range. During daylight hours a sun shades deploy to protect the CCD.

卡普斯卡辛的THEMIS地面全天空成像仪：可采集极光卵的256×256像素全分辨率图像。该全天空成像仪（All Sky Imager, ASI）站点配备170度视场，能够以千米级分辨率对极光卵进行成像。该全天空成像仪由鱼眼镜头与电荷耦合器件（CCD）组成，封装于不锈钢外壳中，顶部设有透明丙烯酸圆顶。该电荷耦合器件分辨率为256×256像素，曝光控制时长范围为5秒至1毫秒，不过典型数据采集速率为每3秒采集一帧图像。